Method of forming brake-beam fulcrums.



A. H PEYCKE.

METHOD OF FORMING BRAKE BEAM F U[CRUMS. APPLICATION HkED-JMLZB 191B Patented M11316, 1919.

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- jccts are accomplished by M "Allen l LFUUNDRIES, F CHICAG'U, ILLINOIS, ll CUhtPUJEtAIllLl'Ohl' OF NEW (TEE/$13 "if.

Application filed Jenner-y 28, 191$.

To all 101 mm it may concern lie it known that l, ARMANI) H. Porcine, a. citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Methods of Forming Brake-Benin FlllCllll'llS, or" which the following is a specification.

This invention relates to brake beam lulcrunis and more particularly to a method of forming sai'nc.

'llhc main object of this invention is to simplify and improve the method of fornn in brake beam i'ulcruins and to increase the strength therepf.

Another object is to provide a brake beam l'ulcruni adapted to meet the various requireinents for successful commercial op eration.

Generally speaking, these and other obproviding abrake beam fulcrum by the use of the method consisting; first in providing ablank having a lever receiving portion, then pressing an other portion or the blank into a cross shape, and then expanding this cross shaped portion to increase the strength thereof.

The invention is illustrated on the accon1- panying sheet of dinivings in which,

Figure l is a. plan view of a. brake beam fulcrum formed in accordance with my invention;

l is a side elevation of the some showing the bean: engaging lips out of their nornml positions when fastened to a beam;

.l ig'. 3 a sectional view taken in the plane of line 3--3 of rig. 52;

Fig. l a side elc ation, and Fig. is aplan view of the blunk from which my brake beau: fulcrum is formed;

Fig. 6 is it plan View of the broke beam fulcrum in a formative stage after the blank Wes bent intermediate its ends;

Fig. 7 is a side elevation of the arrange .nrent shown in Fig; l and also showing an associated bralre beam in section;

Fig. 8 is plan view of the completed brake beain fulcrum after the same has been upset, and

Fig. 9 is a side elevation of brake beam fulcrum applied to shown in section.

The various novel features of my invention will be apparent from the following dethe completed a brulo: been:

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Specification of Letters Patent.

larly pointed out in the ll uteinted lllll'uly d, llllllht serial no. ellot.

scription and drawings and will be particuappended claims.

11 my improved method of forn'ling it broke beam fulcrum, it make use of e single blank 15 which in one operation stomped or drop forged from suitable stock and pro VlClGCl with a central elongated opening 16 and a circular opening l? at each end of the blank. This blank, as shown in Figs. l and 5, after being heated to a, Welding host is bent intermediate its ends adjacent the opening 16 into the shape shown in Figs. 6 and l", the portions directly to the left of opening 18 as sioivn in Fig. 7 being Welded togethen it will be understood that suitable dies are used in this operation, there bein a suitable mandrel located at the bend to form alined openings JS in the spaced vulls 19 of the fulcrum, These spaced walls form a ll!- shuped recess or opening for the reception of a supporting member or brake lever. The ends of the blank are bent into a. shape adapted to embrace a, brake beam 20 The ends of the blanks, however, are not bent into the final position, as shown in big. 9, until it is desired to apply the same to the brake beam. The lever end of the blank is upset by suitable movable and stetionery die members to the form shown in Figs. 8 and 9, wherein the side Walls 19 are made greater depth. The

narrower and with walls also during this operation are provided With outwardly or laterally extending bosses 21 which are provided with key notches for locking in position a pin which may be extended through the open ings 18 for connecting the fulcrum to a sup port or other ineinber.

in order to strengthen the bean). end of the fulcrum, this portion of the; blank is then placed between dies which press the blank into a cross shape in. section; that is, into a shape lntving radially extending ribs. In making this'cross shnpeashearing action it the beam end of the fulcrum is produced and in order to remove this internal sheen ing notion u cone shape die is forced into the middle oi the cross While it suitable die sunrounds this portion of the blank, thereby removing all internal shearing strains. As a result of this last action, the beam end of the fulcriun has ll conical internal Wall 23 and :1 conical external WLll 1% provided with u plurality oi? ribs 25, there being four in fulcrum, consisting this case, which converge toward the opposite end of the fulcrum and terminate in a circular connecting portion of the side Walls 19. After the conical die is driven into the rear portion of the blank, the beam embracing lips 28 are forced outwardly to the dotted line position shown in Fi 2. When it is desired to apply the fulcrums to the brake beams, these lips are heated the desired amount and bent into a beam. embracing position, as shown in Fig. 9. The

secured to the beam in any suitable manner. Lhave shown the fulcrum secured to the beam by means of a rivet 29 extending through the openings 17 which may pass through a registering the beam.

By means of this method a forged brake beam fulcrum of maximum strength is provided by the distribution of metal hereinabove considered and which is adapted to meet the various requirements for successful commercial operation.

It is my intention to cover any modifications coming itbin. the spirit and scope of the follov.'ing claims.

I claim:

1. The metnod of forming a brake beam fulcrun'i, consisting first in providing a blank having av lever receiving portion, then pressing another portion of the blank into a cross shaped section, and then expanding this cross shaped portion to increase the strength thereof.

:2. The method fulcrum may be of forming a brake beam first in providing a. blank having alever receiving portion, then pressing another portion of said blank to provide a plurality of ribs, and then expanding the ribs to increase the strength of the fulcrum.

3. The method of forming a brake beam fulcrum, consisting first in providing a opening in blank having a lever receiving portion. then pressing another portion of the blank to form ribs, and then expanding the ribbed portion to provide a recessed interior for increasing the strength of the fulcrum.

l. The method of forming a brake beam fUlCiUID, consisting first in providing a blank .having a. lever receiving portion, then pressing another portion of the blank into a form providing strengthening ribs, and then forcing the ribs outwardly to increase the strength of the fulcrum.

5. 'l he method of forming a brake beam fulcrum consisting first in. providing a. blank having a lever receiving portion, then pressing another portion of the blank to form slu'engthniing ribs, and then expanding said ribs outwardly by forming a conical recess for strengthening purposes.

0. The method of forming a brake beam fulcrum. consisting first in providing a blank having :1 lever receiving portion, then pressing another portion of the blank to form strengthening ribs. and then expanding the ribbed portion to have internal and external conical surfaces for increasing the strength of the fulcrum.

Y. The method of forming a brake beam fulcrum consisting first in providing a blank having a lever receiving portion, and then radially expanding another portion of the blank to increase the strength thereof.

8. The method of forming a brake beam fulcrum consisting first in providing a blank having a iever receiving fulcrum, and then expanding another portion of the blank outwardly to form an interior recessed portion for increasing the strength of the ful erurn.

Signed at Chicago, Illinois, this 22nd day of January, A. D. 1918.

ARMANI) H. PEYUKE. 

